The Arizona-Sonora Desert Museum has a digital library containing thousands of photographs of plants and animals. The digital library is an interactive site that has a kidâs page with videos, animal sounds, and games.
The photo is courtesy of: http://members.multimania.nl/onager/ballista.htmlMangonelThe Mangonel is what many people think of when they think of a catapult. From the Latin word manganon meaning engine of war. The Mangonel was invented by the Romans in 400 BC. The Mangonel consists of a long wood arm with a bucket (early models used a sling) with a rope attached to the end. The arm is then pulled back (from natural 90o angle) then energy was stored in the tension of the rope and the arm. Then the bucket would be loaded.
June 1, 1954 - Operational testing of the C-11 steam catapult begin. USS Hancock (CVA 19) had been recommissioned Feb. 15, 1954, Capt. W. S. Butts in command. She was the first carrier of the U.S. Navy with steam catapults capable of launching high performance jets.